TY - JOUR
T1 - On Secrecy Performance of MISO SWIPT Systems with TAS and Imperfect CSI
AU - Pan, Gaofeng
AU - Lei, Hongjiang
AU - Deng, Yansha
AU - Fan, Lisheng
AU - Yang, Jing
AU - Chen, Yunfei
AU - Ding, Zhiguo
N1 - Publisher Copyright:
© 2016 IEEE.
PY - 2016/9
Y1 - 2016/9
N2 - In this paper, a multiple-input single-output (MISO) simultaneous wireless information and power transfer (SWIPT) system, including one base station (BS) equipped with multiple antennas, one desired single-antenna information receiver (IR), and N (N > 1) single-antenna energy-harvesting receivers (ERs) is considered. Assuming that the information signal to the desired IR may be eavesdropped by ERs if ERs are malicious, we investigate the secrecy performance of the target MISO SWIPT system when imperfect channel state information (CSI) is available and adopted for transmit antenna selection at the BS. Considering that each eavesdropping link experiences independent but not necessarily identically distributed Rayleigh fading, the closed-form expressions for the exact and the asymptotic secrecy outage probability, and the average secrecy capacity are derived and verified by simulations. Furthermore, the optimal power splitting factor is derived for each ER to realize the tradeoff between the energy harvesting and the information eavesdropping. Our results reveal the impact of the imperfect CSI on the secrecy performance of MISO SWIPT systems in the presence of multiple wiretap channels.
AB - In this paper, a multiple-input single-output (MISO) simultaneous wireless information and power transfer (SWIPT) system, including one base station (BS) equipped with multiple antennas, one desired single-antenna information receiver (IR), and N (N > 1) single-antenna energy-harvesting receivers (ERs) is considered. Assuming that the information signal to the desired IR may be eavesdropped by ERs if ERs are malicious, we investigate the secrecy performance of the target MISO SWIPT system when imperfect channel state information (CSI) is available and adopted for transmit antenna selection at the BS. Considering that each eavesdropping link experiences independent but not necessarily identically distributed Rayleigh fading, the closed-form expressions for the exact and the asymptotic secrecy outage probability, and the average secrecy capacity are derived and verified by simulations. Furthermore, the optimal power splitting factor is derived for each ER to realize the tradeoff between the energy harvesting and the information eavesdropping. Our results reveal the impact of the imperfect CSI on the secrecy performance of MISO SWIPT systems in the presence of multiple wiretap channels.
KW - Channel state information
KW - multiple-input single-output
KW - secrecy capacity
KW - secrecy outage probability
KW - simultaneous wireless information and power transfer
UR - http://www.scopus.com/inward/record.url?scp=84988600891&partnerID=8YFLogxK
U2 - 10.1109/TCOMM.2016.2573822
DO - 10.1109/TCOMM.2016.2573822
M3 - Article
AN - SCOPUS:84988600891
SN - 1558-0857
VL - 64
SP - 3831
EP - 3843
JO - IEEE Transactions on Communications
JF - IEEE Transactions on Communications
IS - 9
M1 - 7480386
ER -